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Originally posted by nucleus01 at 2007-9-26 08:06 PM:
Ï´ÍêÔè½Ó×ÅÌù¡£matlab³ÌÐò£º
x = 0:10; y = [2.51,3.30,4.04,4.70,5.22,5.54,5.78,5.40,5.57,5.70,5.80]
xx = 0:.01:10;
yy = spline(x,y,xx);
plot(x,y,'o',xx,yy);

Âé·³ÄãÔÚWORDÀï±à¼­Ò»Ï·¢µ½ÎÒÓÊÏäÀлл
5Â¥2007-09-26 21:44:35
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nucleus01

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[2.510000000+.799141729899999984*x-0.914172989000000026e-2*x^3, x < 1], [2.528283460+.771716540200000023*x-0.274251896693013288e-1*(x-1)^2-0.429135054999999974e-2*(x-1)^3, x < 2], [2.632015782+.703992109199999994*x-0.402992413227946794e-1*(x-2)^2-0.369286790700000014e-2*(x-2)^3, x < 3], [2.863054931+.612315022899999950*x-0.513778450395199482e-1*(x-3)^2-0.409371778299999976e-1*(x-3)^3, x < 4], [3.673008803+.386747799300000028*x-.174189378519125526*(x-4)^2+.107441579199999998*(x-4)^3, x < 5], [3.736531100+.360693779900000011*x+.148135359116022104*(x-5)^2-.268829138999999994*(x-5)^3, x < 6], [6.677137513-.149522918899999996*x-.658352057944962876*(x-6)^2+.427874976999999990*(x-6)^3, x < 7], [6.678214728-.182602103999999988*x+.625272872663829360*(x-7)^2-.272670768499999994*(x-7)^3, x < 8], [3.570549314+.249931335700000006*x-.192739432710354486*(x-8)^2+0.728080969699999998e-1*(x-8)^3, x < 9], [4.954109149+0.828767612099999968e-1*x+0.256848581775886188e-1*(x-9)^2-0.856161939300000008e-2*(x-9)^3, otherwise])
ˬÊÇÒª¸¶³ö´ú¼ÛµÄ!
2Â¥2007-09-26 19:29:54
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nucleus01

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

Сľ³æ±±Í¥½Ú¶Èʹ

Ï´ÍêÔè½Ó×ÅÌù¡£matlab³ÌÐò£º
x = 0:10; y = [2.51,3.30,4.04,4.70,5.22,5.54,5.78,5.40,5.57,5.70,5.80]
xx = 0:.01:10;
yy = spline(x,y,xx);
plot(x,y,'o',xx,yy);
ˬÊÇÒª¸¶³ö´ú¼ÛµÄ!
3Â¥2007-09-26 20:06:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nucleus01

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

Сľ³æ±±Í¥½Ú¶Èʹ

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